Trash bags in sewer, rockets in backyard

[FishingAddict24]

Sorry if this has been discussed before. I've noticed the trash bags in the sewer are various colors and standout from the background and other items. Is there a challenge to remove all the trash in the sewer or something like that?

Lately, I've been running across random rockets halfway in the ground in the backyard. If you shoot them they explode and they are different colors. Are these for decoration or is there some other purpose for these?

[pandareno1999]

They're just fun things to shoot at.

[realitysquared]

You'll find that each map has a limited number of "destructible" elements. Other than the Quests for Snow Globes, Golden Gnomes and a few secret areas hidden around those destructible elements don't tie into anything in particular.